Champion tier magic boots (+2 to disengage checks and other fancy footwork.) This and other magic items I've created are collected together in the attached PDF.
Orb Weaver's Boots: The lining of these boots is made from silk woven from magical spider's web. They are ornately decorated with flowing web-like designs. Their effect is two-fold: once a battle the wearer can ignore an effect that would change their position, such as being knocked back or prone, and once a day the wearer can traverse a wall or ceiling for a short distance with the ease of a spider.
Quirk: Inverted preference. When idle, you are always trying to find a way to be upside down: hanging from a branch, dangling from a rope, standing on your hands, etc.